Which of the following colloid is an example of foam?
Show answer & explanation
Correct answer: A
Explanation
The correct answer is Option 1 i.e. Sponge
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A foam is a colloid where a large amount of gas is dispersed in a liquid or solid.
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Sponge is an example of a solid foam where air is trapped within the solid matrix.
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It has a porous structure filled with air pockets, making it lightweight and compressible.
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Foams have various applications, including cleaning, cushioning, and insulation.
Explanation of Other Options:
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Butter is an emulsion (liquid dispersed in a solid).
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Cheese is also a type of emulsion or gel.
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Mist is an aerosol where liquid droplets are dispersed in a gas.